Book-sewing machine.



J. GRIESINGEEL BOOK SEWING MAGHINE.

APPLICATION FILED NOVA, 1912.

1,093,694. fPatentea Apr. 21, 1914b 2 SHEETS-SHEET 1.

flfnesses J. GRIESINGER.

BOOK SEWING MACHINE APPLIOATIQN 11.31) NOV. 4, 1912.

Patented Apr. 21, 1914.

$765565 @Vehfa":

a? wig-fi 1 UNITED str TEs PATENT OFFICE.

JOHN enrnsmenn, or LOS mamas, CALIFORNIA.

BOOK-SEWING MACHINE.

To all whom it may concern Be it known that 1, JOHN Gmnsmenn, a subjectof the Emperor of Germany, reslding in the city-of Los Angeles, State ofCalifornia, have invented a" new and useful Book- Sewing Machine, ofwhich the follow ing is a specification. I Theobject of my presentinventionis to provide a machine capable of sewing together with threadorother similar material in successively added layers of either equal orvarying thickness any number of leaves or sheets of paper or othersimilar material without. need of their being folded, and .to producetherefrom books that will open with approximately the same flexibilityas do' those sewed through the folds of their signatures. This I.accomplish by combining with the frame of the stitch making mechanismof a" sewing machine means to maintain the forming book in such aposition with relation to the sewing needle that a straight line uponthe top sheet thereof, drawn from the point of entrance of the needleand at right angles to the plane of the back of the book,

always forms with the line. of the needle an angle of less than ninetydegrees. In practice this angle varies from about forty-five degrees tosixty-five degrees, the exact inclination selected determining the depthof the stitch into the forming book, and the number of layers sewedthrough at each stitch, and being indicated by the nature and thicknessof the sheets or leaves of the book, so as to admit'of flexible openingthereof.

A further object is to provide a book sew.- ing mechanism of thecharacter-stated that can be constructed without any great alteration'ofsewing machines now on the market, thus lessening cost of manufacture ofthe machine. I

Other objects and advantages may hereinafter appear.

The invention consists in the various parts, combinations of parts, anddetails of construction, described in connection with the accompanyingdrawings and then definitely pointed out in generic and also in morelimited claims. a

Referring to the accompanying drawings,

, which illustrate the invention, Figure 1 1s a view partly in sideelevation, and partly.

in section on line a2 x of Fig. 2, showing the invention applied to awell known make of sewing machine, only so much of the sewing machine.proper being shown as is Specification of Letters Patent. Applicationfiled November 4, 1912. Serial 110.72%),492.

- trall the ear-ing 8 when the follower plate 5 is Patented Apr. 21,

necessary to illustrate the application of the invention thereto. Fig. 2is a plan view of the parts shown in Fig. 1, the head of the sewingmachine being broken away to show underlying parts. Fig. 3 is a crosssection of the pivoted portion of the book-holdingcarriage on line m -wof Fig. 1. Fig. 4 is a plan view of .the pivoted portion of thebook-holding carriage. Fig. 5 is a section on line m -m of Fig. 4. Fig.6 is a broken sectional detail of the book sections showing the-diagonalstitching employed. Fig. 7 is a section on line w w of Fig. 1. Fig. 8 isa section through the completed book showing the same in the openposition.

Referring in detail to the drawings, the

booksupporting carriage 1 includes abase plate 2 and, extending at rightangles to said.

ase plate, an abutmentplate 3 against which the book-sections 4: arepressed by the follower plate 5 operated by the screw threaded stem 6,said stem 6 having bearings 7 and 8 and-being rotated by hand wheel 9.From follower plate 5 extends angularly base plate 10, to support andsteady said foll'ower plate 5, said base plate 10 being cencut away at10 to make room for opened-widely to receive a large book. The baseplate 2 of the carriage is provided with end pieces 2 having internalguiding grooves 2 (see Fi 5) to receive the edge portions of the base pate 10 of the follower.

Abutment plate 3 and base plate 2 are respectively provided withvertically alined needle openings 11 and 12 to allow the needle 13 topenetrate diagonally the edge portionof the leaf sections 4 intheoperation of stitching the same together.

14c designatesv well known thread-locking mechanism with which saidneedle 13 cooperates. I

Means will next be described for supporting and guiding the book-holdingcarriage during the reciprocatory movements thereof. Said carriage isdesignated in a general way in Figs. 1 and 2 by the numeral 1, andcomprises a sliding member 15 having arms 16 ahd also includes the baseplate 2- and abutment plate 3, said plates 2 and 3 being constructed infixed relation to each other and together forming a hinged member whichis angularly adjustable with respect to the sliding member 1 5 in orderto vary the angle-of the stitch {and the amount of paper penetratedhythe'ne'dle 13. In order to relcasably secure said hinged member in theadjusted position, each arm 16 is provided with a segmental extension 17having a series of apertures 18 to receive a threaded pin 19 whichextends through the desired aperture and is screwed into the end ofba'seplate 2. -Said hinged member is hinged upon a bar 20 by means of the.hingeeleinents 20 The sliding member 15, seen in cross section in Fig.1, has an expandedor dove-tail base portion 21 which underlies a ledge22 projecting from the casing 23, and also underlies a detachablesecuring plate or bar 24 fastened'to the casing 23 by screws 25,

thereby forming a fastening device and guide for said sliding member:15. fSaid expanded base 21 of said sliding member 15- is provided onits under side (seefFig' 7) with a toothed rack 26 whichis-jjiiitermittently engaged by a dog 27 operated -by the feedingelements 28 and 29. 3".

31 designates the well known sewing machine standard provided withthehead 32 through which the needle-bar 33 reciprocates. 34: is theframe of the sewing maehine. This machine, in distinction from othertypes, places its stitches inv such a manner that they are neitherhorizontal nor vertical with reference to the sheets of the book,-

but slant between the horizontal and vertical, and pierce throughaportion of the block of leaves near an edge, this blockof leavesbeing-built up of layers sufficiently thin to admit of the needlepassing through two or more of them at each stitch. fIncreasing theangle of impact of the needle by adjusting the inclination of thebook-holding device more nearly to the horizontal increases the depth ofthe stitch into the'block of paper (and incidentally increases thestrength of the product); decreasing the .angle of impact decreases thedepth of the stitch (and consequently improves the flexibility andopening qualities of the product.)

In operation enough of the book sections l are clamped in place to bringthe follower plate 5 at least flush-with the lower .edge of the needleopening 12 so that the needle will not strike said plate. The first leafsections are then sewed together by the diagonal stitches 35 (see Fig.6). After each additional leaf section 4 is sewed on,

the hand wheel 9 is rotated to open the follower plate 5 and clamp inplace a new'leaf section. After thebook has been built up to the fullsize it is removed from the carriage 1 and then replaced in the reversepo sition and an additional row of stitches 36 (see Fig.6) run along theoppositeside of the book.

v The invention has been illustrated and described as applied to onewell known make of sewing machine, but it is to be understood thattheskill of the workman will enable him to apply the book-holding deviceherein described and claimed to other sewing machines without departingfrom the spirit book in position for the needle to pass.

through a portion of the book adjacent to the said edge, ahinge'conneeting said right angled portion of said book-holding devicewith said carriage, a segmental extension carried by said carriage andhaving a series of apertures, and adjustable means to removably engagesaid apertures to vary the inclination of said book-holding device.-

2. In a book-sewing machine, thecombination, with the frame andstitch-making mechanism of a sewing-machine, of acarriage to support thelayers of'a book during sewing, said carriage comprising a rightangledseat adapted to receive an edge portion ,of a book during sewing, therebelng' needle-receiving apertures formed in the carriage to permit theneedle to sew in front of and adjacent to said edge of said book, thewalls of said seat extending at an acute angle to theneedle path,theneedle-point coming out at the back of the book, and a followermovable toward and from one of the walls of the seat to clamp the bookin position for sewing.

3. Theeombination, with the frame of a sewing machine,'of a book-holdingcarriage having a base plateand an abutment plate disposed at an angleto said base plate, and a follower comprising an upwardly extendingplate adapted to cooperate with said abutment plate to support a bookbeing formed with the back edge of said book resting upon said baseplate, and stitch making mechanism comprising a needle disposed at anoblique angle with relation to said base plate, said needle during thestitchforming operation reciprocating to and from a position exterior tothe angle between the inner surfaces of said abutment plate and baseplate and being thereby adapted to pass obliquely through the lower edgeportions of the outer leaf sections of the book being built up.

4. The combination, with the frame and stitch-making mechanism of asewing-machine, of a book-supporting carriage comprising a base plateand an abutment plate reciprocally movable in a path at right angles tothe needle path of'said sewing machine, a hinge or pivotal support forsaid carriage extending in thedirection of the reciprocation thereof,and means to adjustably secure said carriage in various pivotalpositions with resbect to 'said supportys aid base plate ,and al sp theabutment plate ad; joining thereto having needle-receiving able throughan angle of less than ninety degrees with respect to the needle of saidmachine, said carriage being reciprocally movable in the direction of anedge thereof,

a small portion-of said carriage lying upon one side of the line of saidneedlewhile themajor portion of said carriage lies upon the a p posite'sideof the line of said needle, there qbemg-g -ap'ertures throughadjoining sidesof s id' carriage for the passage of needle in the,process of sewing.

In testimony whereof -I. betel hereunto signed my name in the presenceof two subscribing witnesses at Los Angels; in the county of-LosAngelesand State of California, this 29th day of October, 1912.

' JOHN GRIESI NGERQ Witnesses: I Almm'r H. MERRILL,

W. ELMO Ramos.

